From parent levels

ChapterXVIICongenital malformations, deformations and chromosomal abnormalitiesOpen

Exclusions

inborn errors of metabolism (E70-E90)

BlockQ30-Q34Congenital malformations of the respiratory systemOpen

CategoryQ30Congenital malformations of noseOpen

Exclusions

congenital deviation of nasal septum (Q67.4)

Q30.0

CategoryBlock Q30-Q34 Chapter XVII

Choanal atresia

Inclusions

Atresia of nares (anterior)(posterior)
Congenital stenosis of nares (anterior)(posterior)

Parent: Q30 Congenital malformations of nose